Downhole tool having radially extendable members
US7703553B2 · kind B2 · utility
26Cited by
5References
63Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2004 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Aug 28, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/322
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole tool comprises a body, radially extendable members mounted to the body and movable between retracted and extended positions, a cam member operatively associated with the extendable members and movable relative to the body to extend the extendable members, and a support member configurable to permit retraction of the extendable members from an extended position. The tool may be an under-reamer, and the extendable members may be cutting blades.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.